Get Free Gear Trains PDF for Download today. Examples are included after each Formula with a link to a live Calculator! All the Formulas and Calculators support Unit Conversion as well. This PDF features 13 calculators from Physics. Inside, you'll discover a list of formulas such as Velocity Ratio, Speed Ratio of Compound Gear Train and 13 more formulas!. The Variables, Functions and Constants are summarized at the end. Explore and share Gear Trains PDFs!